Cable puller



Jan. 18, 1944. c. R. BERGMAN CABLE PULLER' Filed Aug. 20, 1945 PatentedJan. 18, 1944 UNITED STATES FATENT QFFICE CABLE FULLER Carl R. Bergman,Minocqua, Wis.

Application August 20, 1943, Serial No. 499,400

3 Claims.

This invention relates to a puller for use by electricians or theirhelpers in pulling stranded wire or cable or conductors throughconduits.

It is particularly aimed to provide a means which readily andexpeditiously may be placed on the cable, may be used by inexperiencedworkmen, which will yield and adapt itself to inequalities withinconduits, and which in many instances will enable replacing andpositioning the cable in the conduits through pushing by one man.

In addition it is aimed to provide a novel structure generally of bulletshape made of a yieldable plastic material and preferably havingreinforced openings therein to enable pins or the like to be driven intoa socket thereof which receives the cable.

The more specific objects and advantages will become apparent from aconsideration of the description following taken in connection withaccompanying drawing illustrating an operative embodiment.

In said drawing:

Figure 1 is a view in elevation showing my improvements in place on afragment of a con ductor cable;

Figure 2 is an enlarged central vertical sectional view through thepuller;

Figure 3 is an end view of the puller; and

Figure 4 is a horizontal section taken on the line 44 of Figure 1.

Referring specifically to the drawing wherein like reference charactersdesignate like or similar parts, I provide a puller generally in theform of a socket or tube at ID, for the most part made in one piece,preferably from any suitable plastic material so that it will beslightly yielding or elastic in order to yield and give in passagethrough conduits. Such sleeve or body If! is open at one end into asocket ll into which a stranded cable or any equivalent I2 is adapted tobe inserted. The present invention accommodates such cable without thenecessity of cutting away any of the insulation, and hence it is readilyapplicable into the socket. At suitable intervals metallic eyelets orreinforcements I3 are embedded in the wall of the plastic, formingopenings 14 through which pins l5 are adapted to be driven. Such pins,as shown in Figures 1 and 4 are preferably of a length to extendcompletely across the bore of the socket II, and it will be noted thatthe eyelets I3 ar arranged in diametrically aligned pairs so that thepins l5 will at opposite ends be disposed in openings 14 of the eyelets.These pins pass through the metallic strands l6 of the cable, spreadingthem where necessary, as shown in Figure 4. Preferably a pair of pins I5are used since they make a crossed arrangement giving maximum strength,arranging each of the pins so that it cannot be pulled loose at eitherend. The pins l5 preferably are screws as shown although any equivalentmay be used.

, One end of the body or sleeve I0 is closed as at I? but may be open inpart, but such end in any event will be generally conical orbulletshaped or the equivalent to facilitate its passage with such endI! foremost in the conduit. Such end has an eyelet or metallic tube Itembedded therein, forming an opening at l9 whereby a rope or the likemay be attached for the purpose of pulling the puller and cable throughthe conduit.

As a result of the construction, a very effective hold on the cable isprovided by the socket in combination with a pinal pin l5, and thestructure readily may be pulled with the end I! foremost through aconduit, and since it is made of plastic material, it will yield,spring, or give according to inequalities within the conduit, greatlyfacilitating the drawing of the -cable. The

puller may be applied instantly and operated by unskilled labor, and ininstances I have found that often the cable I2 may be pushed in place byone man, with the puller in place thereon, it being unnecessary in suchinstances to use the rope or other draw element at the eyelet l9. Alsoin such instances the yielding, giving. .or flexibility of the plasticpuller I0 is of great advantage.

Various changes may be resorted to provided that they fall within thespirit and scope of the invention. I

I claim as my invention:

1. A device of the class described for application to cable to aid'inthe positioning thereof in a conduit, the device comprising a tubeofyielding material having a socket or attachment to the cable, saidtubing being closed at one end, and at that end being generally ofbullet shape, said body having an opening therethrough to enable a pinto be passed through the cable to anchor the latter to the body, saidbody also havin an opening in diametric alignment with said opening sothat the pin at its entering end may extend into the same.

2. A device of the class described for application to cable to aid inthe positioning thereof in a conduit, the device comprising a tube ofyielding material having a socket or attachment to the cable, saidtubing being closed at one end, and at that end being generally ofbullet shape, said body having an opening therethrough to enable a pinto be passed through the cable to anchor the latter to the body, saidbody also having an opening in diametric alignment with said opening sothat the pin at its entering end may extend into the same, said bodyalso hav ing aligned openings and a pin passing through the latteropenings in crossed relation to the first-mentioned pin to anchor acable.

3. A device of the class described for application to cable to aid inthe positioning thereof in a conduit, the device comprising a tube ofyielding material having a socket or attachement to the cable, saidtubing being closed at one end, and at that end being generally ofbullet shape, said body having an opening therethrough to enable a pinto be passed through the cable to anchor the latter to the body, saidbody also having an opening in diametric alignment with said firstopening so that the pin at its entering and may extend into the same,said body also having aligned openings and a pin passing through thelatter openings in crossed relation to the first-mentioned pin to anchora cable, and eyelets in said openings reinforcing the same.

CARL R. BERGMAN.

